fix: nighthawk arg (#14)

Signed-off-by: Kush Trivedi <kushthedude@gmail.com>

Author: kushthedude

apinighthawk/nighthawk.go

@@ -41,7 +41,7 @@ func NighthawkRun(config *NighthawkConfig) ([]byte, error) {
 	qps := strconv.FormatFloat(config.QPS, 'f', -1, 64)
 	c := strconv.Itoa(config.Thread)
 
-	args := []string{"--rps " + qps, "--concurrency " + c, "--duration " + duration, rURL.String(), "--output-format fortio"}
+	args := []string{"--rps " + qps, "--concurrency " + c, "--duration " + duration, rURL.String(), "--output-format experimental_fortio_pedantic"}
 
 	log.Info("Received arguments for run", args)